If you're attractive to her, you can say anything and she'll respond positively. My handsome friend recently pulled a woman with the nicest ass from the gym and his opener was "I've been coming here 6 months and you're the most beautiful girl here". *cringe* but she said she thought he was attractive too. He asked if she wanted to grab dinner sometime. She said yes and easily handed him her number. Dude wouldn't shut up about it.